A rule is an automated check that looks at a resource's settings, usage or cost and creates a recommendation when it finds a problem, such as a disk with no server attached. ZopNight has 684 rules in 11 categories. Why it matters: Rules let one platform check thousands of resources continuously in a way no person could.
Foundations takes about five hours. The first lesson is nine minutes.
Free curriculum. No paywall. 290 lessons across 7 courses, plus an optional 24-lesson beginner course. Browse every course without an account; a free account opens the lessons, saves your progress and opens the exams for three publicly verifiable credentials. Read it on the train, take the exam on a Saturday, list the credential on your résumé Monday.